Boost release 1.58.0 beta 1 is now available from SourceForge

See http://sourceforge.net/projects/boost/files/boost/1.58.0.beta.1/

This release contains three new libraries:
• Endian: Types and conversion functions for correct byte ordering and more regardless of processor endianness.
• Sort: includes spreadsort, a general-case hybrid radix sort that is faster than O(n*log(n))
• WinAPI: 

For details of what's in the release, see http://www.boost.org/users/history/version_1_58_0.html
Note that the links to files on this web page are for the final release - use the SourceForge link above to get the beta files.

Please download the beta, give it a try, and report any problems you encounter.

IMPORTANT NOTE:
There is a bug with the build scripts; you have to specify the address-mode and architecture to b2.
I used:
        ./b2 address-model=64 architecture=x86

(this will be fixed before the final release)

Thanks,

-- The Boost Release Team